a) I disagree still... let's put it this way, on a forum like r/zizek where people discuss Zizek's positions, it's patently obvious who hasn't actually read Zizek and who just watches YouTube and the Pervert's Guides, which is what a lot of Zizek fans do because they find the reading intimidating (it certainly is, at first). Don't read his entire work, just Less than Nothing, or one of his self-proclaimned important works.

b) We can like and appreciate both (I do too). They are compatible to an extent, but some facets of behavior described from a pure evo psych or cog sci perspective conflict with a Lacanian-Hegelian one. My friend is a Steven Pinker fanatic, and we are in constant debate anytime we meet up for beers.